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| <head> |
| <title>Development</title> |
| </head> |
| <body> |
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| <h1>Intel® x86 Coreboot/FSP Development Process</h1> |
| <p> |
| The x86 development process for coreboot is broken into the following components: |
| </p> |
| <ul> |
| <li>Coreboot <a target="_blank" href="SoC/soc.html">SoC</a> development</li> |
| <li>Coreboot <a target="_blank" href="Board/board.html">mainboard</a> development</li> |
| <li><a target="_blank" href="fsp1_1.html">FSP 1.1</a> integration</li> |
| </ul> |
| <p> |
| The development process has two main phases: |
| </p> |
| <ol> |
| <li>Minimal coreboot; This phase is single threaded</li> |
| <li>Adding coreboot features</li> |
| </ol> |
| |
| <h2>Minimal Coreboot</h2> |
| <p> |
| The combined steps below describe how to bring up a minimal coreboot for a |
| system-on-a-chip (SoC) and a development board: |
| </p> |
| <table> |
| <tr bgcolor="#ffffc0"> |
| <td>The initial coreboot steps are single threaded! |
| The initial minimal FSP development is also single threaded. |
| Progress can speed up by adding more developers after the minimal coreboot/FSP |
| implementation reaches the payload. |
| </td> |
| </tr> |
| </table> |
| <ol> |
| <li>Get the necessary tools: |
| <ul> |
| <li>Linux: Use your package manager to install m4 bison flex and the libcurses development |
| package. |
| <ul> |
| <li>Ubuntu or other Linux distribution that use apt, run: |
| <pre><code>sudo apt-get install m4 bison flex libncurses5-dev |
| </code></pre> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| <li>Build the cross tools for i386: |
| <ul> |
| <li>Linux: |
| <pre><code>make crossgcc-i386</code></pre> |
| To use multiple processors for the toolchain build (which takes a long time), use: |
| <pre><code>make crossgcc-i386 CPUS=N</code></pre> |
| where N is the number of cores to use for the build. |
| </li> |
| </ul> |
| </li> |
| <li>Get something to build: |
| <ol type="A"> |
| <li><a target="_blank" href="fsp1_1.html#RequiredFiles">FSP 1.1</a> required files</li> |
| <li><a target="_blank" href="SoC/soc.html#RequiredFiles">SoC</a> required files</li> |
| <li><a target="_blank" href="Board/board.html#RequiredFiles">Board</a> required files</li> |
| </ol> |
| </li> |
| <li>Get result to start <a target="_blank" href="SoC/soc.html#Descriptor">booting</a></li> |
| <li><a target="_blank" href="SoC/soc.html#EarlyDebug">Early Debug</a></li> |
| <li>Implement and debug the <a target="_blank" href="SoC/soc.html#Bootblock">bootblock</a> code</li> |
| </ol> |
| |
| |
| <hr> |
| <p>Modified: 31 January 2016</p> |
| </body> |
| </html> |